Flatbusher, there will always be some people who take unfair advantage of any “system”. That’s why it’s important for a girl or her family/friends to do research.
I don’t think the perception that a boy isn’t serious if his plan is to learn for two-three years is based on any inherent truth, it’s just that the reality today is that if a boy wants to learn for five-ten, he usually can, so someone who is serious about his learning usually will plan for that.